Diestock



July 13,1926. 1,592,170

F. J. WILKINSON DIESTOGX Filed May'lQ, 1924 3 Sheets-Sheet 1 @l v @j INVENToR July 13 1926.

F. J. WILKINSON DIESTGCK 3r Sheets-Sheet 2 Filed May 19, 1924 1750/1 BY WAM T@ Z /A v 2?/ A TTORNE YS iran insana 'rarer erica FARLEY JAMES WILKINSON, 0F GARY, NDIANA.

DIESTOCK.

Application filed May 19, 1924. Serial No. 714,419.

My invention relates to improvements in die stocks, and it consistsin the combinations, constructions, and arrangements, herein described and claimed.

An object ofA my invention is to provide a die stool; of the type described which is a part or the mechanism shown in my cepending application for patenty on pipe cutter and threader, Serialllo. 713,781, tiled May 16, 1924. In my co-pending application 1 showed a die stock A, a pipe cutter B, and a housing C, which enclosed the die stock Vand cutter. The housing D for a motor, also comprised a portion oi the housing C. The housings C and D are supported by a carrier E. This in turn is slidably disposed on a. guide trame F and adapted to be moved vertically with respect to the guide frame by means 'of a thumb screw G.

The principal object of the die stock or threader is to provide a threader which is adapted to receive a pipe and to be centered with respect to thel pipe, and also to the cutter, the die stock being further provided with means for movingvthe dies'aWay from the pipes so as to permit the pipe to be Withdrawn Without the necessity ot rotating the pipe with respect to thedie stock.

A further object of my invention is to provide a device of the type described which is compact in structure, and which theretore may be used with a hand lever instead of the motor driven apparatus as shown in the present drawings.

A further object of my invention is to provide a device Iof the type described which is adapted to be quickly adjusted With respect to different sized pipes, whereby a greater amount of Work may be turned 'out in a given length ofV time than is capable With the standard die stocks.

Y A further object or' my invention is to provide a device of the type described which has novel means for automatically taking up the Wear Withoutin any Way interfering with the accuracy of the device.

@ther objects and advantages Will appear in the followingspecification, and the novel features of the invention will be particularly pointed out in the appended claimsA My invention is illustrated in the accompanying drawings, forming part oi: this ap plication, inwhich- Y A Figure 1 is a side elevation of the device as shown in combination With the cutter and motor driving mechanism,

Figure 2 is a viewjpartly in section and partly in elevation showing the die carrier removed so as to permit the dies to be re-` moved rom the device,

Figure 3 is an end elevation of the device, Figure 4 is a sectional view along the line 4 4 of Figure 8,

Figure 5 is a sectional view along the line 5 5 of Figure 3,

Figure 6 is a side elevation of a portion of the device,

n Figure 7 is a section along the line 7-7 of Figure 3, Y .l

Figure S is a plan view of another portion of the device, and Y Figure 9 is a section along the line 9-9 of Figure 5.

ln carrying out my invention l provide a rousing C which encloses the die stock A and cutter B of the device. The housing C is supported by a housing D, the housing D in turn enclosing a motor, which is operatively connected tothe die stock A,

and tothe cutter B. The housing D is car-y ried by a carrier E, which is slidably mounted upon the trame F. The frame F in turn is pivotally carried by a support H. The vise, (not shown) is carried by the support H, and is adapted to support the pipe to be cut, this pipe beingfreceived in the threader A and the cutter B. f The housing D is adapted to be moved vertically by means of a thumb screW-G. In this manner, the threader A and cutter B may be aligned with the pipe to be cutand threaded. Thez parts mentioned so far have been described in detail in my co-pending application, and therefore need no further description at this point.

The die stock or threader is clearly shown in Figures 3 and '4, and it Will be noted from these figures that the die stock is enclosed in a casing ring 1 which has gear teeth 2 cut in its outer periphery. The teeth 2 are in mesh with a worm 3 that in turn is mounted upon a shaft 4. The shaft is operatively connected to va motor` by means of a link belt 6.' i/Vhen lthe motor is op erated, it Will rotate the casing 1. .i

An outerl sleeve 7 is mounted 'n the bore 8 ot the casing ring 1 and has lugs 9. which are adapted to abut lugs 10 of the casing,

whereby the sleeve 7 is rotated when the casing ring 1 is rotated. The lugs 9 are shorter in length than the length of the casing ring 1, so as to permit the sleeve 7 to move slightly with respect to the casing ring 1. Rollers 11 are carried by the sleeve T and permit the movement. The rollers 11 are disposed between certain ot the lugs 9 and 1t)7 (see Figure 3).

rPhe sleeve 7 is provided with inwardly extending lugs 12 which are slidably received in slots 13 ot' a body portion 14. The lugs 12 turn the body portion 14 when the sleeve 'T is turned, yand also guide the body portion when the body portion is moved longitudinally vith respect to the sleeve T.

In Figure et I have shown the body portion 11- as being provided with a bore 15 in which a sleeve 16 is slidably disposed. The sleeve 16 is locked to the body portion 11 by means ot' pins 17, (see Figure The pins are carried by the sleeve 16 and are slidably disposed in grooves 1S in the bore 15. rllhe groove 1S is ot a certain shape so as to lock the sleeve 16 in the lposition shown in Figure 5, and to also permit the body portion 11 to move outwardly into the position shown in Figure 2. rIlhe sleeve 16 is rotated slightly with respect to the body portion 1-1 so as to dispose the pin 17 in the leg 19 ot the groove, whereupon a spring 2O will move the body portion 14: into the position shown in Figure Q.

IV hen the body portion -11- is in the position shown in Fig. 2, dies A21 that are slidably disposed in the bores Q2 in the body portion are adapted to be lremoved if desired. It will be noted from yFigures 2 and 3 that the dies have projections Q3 that are slidably received in L-shaped grooves 21 in the sleeve 'l'. The grooves 24 are inclined, (see Figure 5) so as to 'move vthe dies 21 inwardly when the body portion 11 is moved into the bore of the sleeve 7. In this mannerI` the dies may be adjusted for various sized pipes by merely moving the body portion 11 with respect to the sleeve 7.

The means` for moving the body portion 11 into the sleeve 7 is clearly shown in Fligure e, and comprises a ring 25 that is secured to the sleeve 1G bv means of a disc Q6 and a plate 2T. The disc 26 Ahas a recess 2 adjacent to its outer alga-which, with the plate 27, forms a groove in which the ring 25 is adapted to rotate. The ring Q5 is adapted to move with respect to the sleeve 16 and is operatively connected to the sleeve 7 by means of racks 29 and a ring 30. The ring is threaded on its interior surface, these threads meshing with the threads 31 on the racks 29. The ring y30 is locked to the sleeve T y means ot' a disc'SQ, (see Figure 5). It will be apparent from this construction that when the racks 29 are moved with respect to the ring 25, the body portion 11 will be moved with respect to the sleeve 7.

rI`his movement is accomplished by means ot a cam-shaped strip 325 that is carried by the ring 2. In the present iorm ot the device I have shown two cam-shaped strips 33, each one o1' these being connected to its respective rack 29. The racks Qt) have grooves 51 therein which receive the strips and it will theret'ore be apparent that when the ring 25 is rotated7 the strips '33 will move the racks Q9 with respect to the ring 25, and will therefore cause the body portion l1 to be quickly moved in either direction. Alter the ring 25 has` been rotated, it may be locked to the racks 29 so as to prevent further movement oi the body portion 1-1- with respect to the sleeve 7. This is accomplished by means o1 a locking pin 35, -(see Figure 0). The pin 53:3 is carried by a casing 3G, which in turn is supported by the ring A spring 3T bears against the pin 35 and yieldingly holds the pin in a recess 3S in one ot' the racks 99. A handle 39 permits the pin 35 to be removed from the recess 3S, whereby the ring may again l rotated with respect to the racks 29. lllhen the ring Q5 is turned, it quickly moves the racks and thus causes qnicl; adjustment of the dies Q1.

lYhen it is desired to move the racks 29 more slowly, so as to permit the dies 21 to be finely adjusted, the ring 30 actuated. As heretofore stated, the ring 3() secured to the sleeve T by means otl the disc 3Q, whereby a rotation o1'l the ring 30 will move the sleeve T with respect to the body portion 1-1. After the ring 30 has been moved, it may be locked against further movement by means ot the locking device shown in Figure S. rI`his device comprises a screw 10 which is disposed with in a bore 11 ot the ring 3 An operating handle 1.2 is rigidly secured to the screw Ll() and is locked against rotation with respect to the ring 30 by means of a leaf spring 13, this spring being received within a recess -1-1 in the operating handle 12. latch member 45 is pivotally secured to the ringr 30 at 16 and has prongs .7 that are adapted to enter recesses 41S in the sleeve 'l'. lhen it is desired to remove the prongs L17 from the recesses l 8, it is first necessary to remove the leaf spring L13 from the recess stl, whereupon the operating handle L12 n'iay be rotated so as to move it 'away trom the latch member t5 and permit the latch member to be moved outwardly so as to tree the prongs 11' from the recesses 18.

In Figure i I vhave shown a roller L19 which is carried by the body portion 1%, and which bears against the sleeve 7 so as to permit Vsleeve 16 and is enclosed by a tlan the body portion 14' to move with respect to the sleeve 7. It will be noted from Figure 3 that I have provided two oi' such rollers. The pins 11 and the rollers 49 permit the various parts to move with re-V spect to each other so as to adapt the device to various kinds of work.

ln Figures and 9 l have shown a novel means t'or centering'the devicewith respect to the pipe. rlhis means is carriedby the ge ot the sleeve 16 and by the disc 26. ln Figure 5V it will be noted that the disc 26 and flange 50 enclose the plate 27 and a plate 51. The plate 51 has recesses 52 therein which receive projections 53 that are integral with the iiange 50 and sleeve 16. Screws 54 connect the disc 26 to the sleeve 16, and are received in openings 55 in the projections 53. The

' screws 511 pass through openings 56 Vin the plate 27 and not only prevent rotation et the plate 27 with respect to the disc 26, but also bindthe plate to the Vprojections 53. The plate 51 is adapted to Abe moved with v`respect to the plate 27 and this is accon plished by means ot' .a thumb screw 5'! which is pivotally connected atv 56 to the plate 27 and is operatively connected to the plate 51 at When the thumb screw 57 is actuated, it will draw the lug 60 to which it is at- '.tached toward the pivotal point 58, and

will therefore rotate the plate 51Y with respect to the plate 27. ln Figure 9 l have shown the plate 27 asV being provided with arcuate-shaped slots 61, these slots receiving arcuate-shaped lingers 62. rlhe fingers'62 have projections that-are slidably received in thc slots 64 in the plate 51. 1t will Y theretore be seen trom this construction that .'vhen'the plate 51 is moved with respect to the plate 27, the finger 62 will be moved toward or away rointhe. longitudinal axis of the sleeve 16.

From the foregoing description ot the various yparts of the device, the operation thereof may be 'readily understood. in Fig. 1 l have shown how the die stoel: is mounted with respect to the cutter, and with respect to the support H. In thread ing a pipe, the pipe is iirst clamped in the vise, (not shown), and the die stock is then moved on over the pipe so as` to dispose the pipe in the sleeve 16. The thumb screw 57 is now actuated so as to cause the fingers 62 to center the pipe with re peet to the die stock. r he ring 25 is now moved so as kto cause the pin 35 to enter the recess 38, and lock the racks 29 to the ring. This move ment draws the body portion 1st into the sleeve 7 and also moves the dies 21 toward the pipe. rThe ring 30 is now actuated, whereby the dies may be set so as to cut the thread in the pipe. The ring 30 is locked against movement by means of the latch L15. rl"he motor 5 may be started, and will rotate the casing 1 so as to move the dies 21 around the pipe, which is being cut. As shown in 7Eigure 5, the dies have teeth cut on their inner surfaces, and these teeth bite into the pipe and cut the threads in the pipe while the die stock is being rotated on the pipe.

After the thread has been out, the pin 35 is removed trom the recess 38, and the ring 25 is rotated so as to release the dies trom the pipe. ln this way, the pipe may be rcmoved without the necessity of rotating the die stock with respect to the pipe. ln Figure 5 l have shown two markers 63 and Gil which permit the device to be set 'tor various sized pipes. The marker 6e is carried by the sleeve 7. Lines 65 on the marker 6i are placed in a predetermined position so as to enable the operator to know that when the mark 66 on the marker 66 is aligned with either die stock is adjusted 'for a` certain sized pipe. In Figure 3 l have shown the markers one of theselines, thev as being positioned adjacent to the racks 29.

ln assembling the sleeve v16 to the body portion 1li, the sleeve is disposed so as to cause the pins 17 ot the sleeve to be receivedrin the legs 67 ot the grooves 18. The sleeve is now moved inwardly into the body portion until the pins strike the branches 68 ot the grooves. A slight rotation ot the sleeve will now cause the. pins to be received in the legs 19. The pins 17 are disposed in the position shown in Fig? ure 5, when the device is adjusted so as 'to thread pipes. To prevent the movement ot the sleeve 16 with respect to the body 14, i provide a locking screw 69 that is partly Yreceived in the body portion 1% and partly received in the sleeve 16, (see Figure ln' in changing the dies, the screw 69 is iirst removed troni the sleeve 16, so as to permit the sleeve to be turned with respect to the body portion 14. The locking pin 35 is released from the recess 38, and the latch L1-5 is released from the recesses 118. The flange. 50 and the sleeve 16 may new be turned so as to dispose the pins 17 in 'the legs 19 ot the groove 18. The spring 2O will now force the body portion 14 outwardly with respect to the sleeve 7, so as to dispose the Apins 17 in the ends a; ot the legs 19. rThe pins 17 prevent further movementI ot the body portion 1st with respect to the sleeve 16. Then this movement takes place, the body portion le is disposed in the position shown in Figure 2. The dies 21 are tree so that they may be removed and other dies substituted there-for it desired.

tvvill be apparent from the construction described that the device may be adjusted :tor various sized pipes, so as to thread these pipes. Moreoverl the body portion lat may be moved into the position shown in Figure 2 so as to remove the dies it' desired. Une otl the principal objects ot the device lies in the fact that the dies are moved inwardly when the body portion 1l is moved with respect to the sleeve. In this way, the dies may be moved away from the pipe a'lter the pipe has been threaded so that the pipe may be removed from the die stock without the necessity of rotating the die stoel; on the pipe.

The spring` 20 not only provides a novel means for moving the body portion 1lwith respect to the sleeve 7, but also provi des an automatic means for taking' up wear between these two parts. lt will be noted from Figure 5 that the spring 2O bears against the body portion 1i and also against the sleeve 7. The body portion 11 and the Sleeve 7 are connected to each other by means ot the ringy 25, the racks QSL and the ring 30. It any wear takes place between the plate QT and the racks Q9, as at the points Y and Z, (see Figure at), this wear is automatically taken up by means ol a spring 20. The ring 25 acts as a 't'ulcrum between the plate 2T, and the racks Q9. In this way, there is` always a positive connection between the body portion 14 and the sleeve T.

As shown in Figure 5 the body portion lelis provided with projections TG which are disposed directly above and below the dies 21 and act as additional guiding` means Ytor the dies. These projections enter the L- shaped slots 2st in the sleeve T when the body portion 14. has been moved into the bore 1.5 a predetermined distance. In this way. the projections aid in locking' Vthe body portion 14 to the sleeve 7 so as to cause these parts to rotate as a unit.

As heretofore stated, the lingers 02 are adapted to be moved into the interior ot the sleeve 16. Openings 75 in the Sleeve 16 are provided for this purpose and receive the ingers 62.

I claim:

1. A die stock comprising an outer sleeve, a die carrying body slidably disposed in said sleeve, an inner sleeve slidably mounted in said body, means for locking said inner sleeve to said body, dies carried by said body and being movable toward and away from each other when said body is moved in said outer sleeve and means Vtor permitting said body to move with respect to said inner sleeve to move said dies.

2. A die stock comprising,r an outer sleeve. a die carrying' body slidably disposed in said sleeve, an inner sleeve slidably mounted in said body, means for locking said inner sleeve to said body, dies carried by said body and beingr movable toward and away vfrom each other, said dies being moved when said body is moved with respect to said outer sleeve, and means for quickly movingr said dies, said means including` spring` means 't'or moving' said body with respect to said inner sleeve.

8. A die stoel: comprisingT an outer sleeve. a die-carrying' body slidably disposed in said sleeve, an inner sleeve slidably mounted in said body, means for lookinr said inner sleeve to said body, dies carried by said body and being movable toward and away from each other, and a spring disposed bctween said die-carrying body and said outer sleeve and being',r adapted to move said diecarrying body into a position to 'tree the dies from said outer sleeve, said locking means permitting' a quick movement of said diecarryinn body with respect to said outer sleeve and inner sleeve when said die-carrying body is rotated into a predetermined position.

FARLEY JAMES YVILKINSON. 

